tool for finding undelegated children in your DNS

Chris Thompson cet1 at
Fri Jul 27 16:26:38 UTC 2018

On Jul 27 2018, Timothe Litt wrote:

> If you want to do this validation with zone files, then text tools (e.g.
> a Perl, awk, etc) are a reasonable approach.  It would not be
> particularly difficult - though you do have to handle include files. 
> Rather than working from zone files, the easiest approach is to do a dig
> axfr to get the actual zone...

If you do need to work from the zone files, I would strongly recommend
normalising them with "name-checkzone -o outfile zonename infile" or
an equivalent, before trying to unpick them with "Perl, awk, etc".

Chris Thompson
Email: cet1 at

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